4820-01-155-7750, VALVE,STOP-CHECK

National Stock Number:
4820-01-155-7750

Federal Supply Class:
4820

National Item Identification Number:
011557750

Description:
VALVE,STOP-CHECK

Detail:
A VALVE WITH A BOLT OR STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST POSITION, THE VALVE DISK IS LOCATED AND LOCKED AGAINST THE SEAT PERMITTING NO FLUID FLOW THROUGH THE VALVE. IN THE SECOND POSITION, ONE SIDE OF THE VALVE DISK IS LOCATED AGAINST THE SEAT PERMITTING MOVEMENT OF THE DISK IN A MANNER THAT WILL ALLOW A FLOW OF FLUID IN ONE DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. SEE ALSO VALVE (1), LIFT-CHECK AND VALVE (1), STOP-LIFT-CHECK.

Manufacturer Information:

F-93-D 1-2IN	86520	CONBRACO INDUSTRIES INC R-P AND C VALVE DIV
F-93-DE1-2IN	86520	CONBRACO INDUSTRIES INC R-P AND C VALVE DIV

Techincal Specification:

MATERIAL	STEEL UNS K03504 BODY
	STEEL COMP 420 FLOW CONTROL DEVICE
	COBALT ALLOY SEAT
	STEEL COMP 416 STEM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY
	ASTM A582 GRADE 420 (500 BHN) ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
	ASTM 1582 GRADE 416 (250 BHN) ASSN STD SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATOR	STRAIGHT THRU
FLOW CONTROL DEVICE	DISK
MEDIA FOR WHICH DESIGNED	STEAM 1ST RESPONSE
	OIL 2ND RESPONSE
MAXIMUM OPERATING PRESSURE	800.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	850.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD	MANUAL
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	SOCKET (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED	0.500 INCHES ALL ENDS
MOUNTING POSITION	HORIZONTAL
BONNET TYPE	OUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHOD	BOLTED
FEATURES PROVIDED	BONNET PACKING
SUPPLEMENTARY FEATURES	THIS ITEM HAS BEEN REVIEWED FOR ASBESTOS MATERIAL;THE CURRENT APPROVED SOURCES;86520 HAVE INDICATED THEIR PART NUMBER CONTAINED ASBESTOS PRIOR TO 1984,THEY CONTINUE TO MANUFACTURE THE SAME PART NUMBER WITHOUT ASBESTOS MATERIAL AFTER 1984

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